These questions all involve the probability of 2 independent things happening. To get the probability of 2 things happening, you multiply the probability of the first thing by the probability of the second thing happening:

7). What is the probability of flipping a coin twice and having it come up "tails" both times?

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8). What is the probability of drawing a "3" of any suit out of a deck of 52 cards and then drawing another "3" if I put the first "3" back in the deck before drawing the second time?

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9). What is the probability of drawing a "3" of any suit out of a deck of 52 cards and then drawing another "3" if I DO NOT put the first "3" back in the deck before drawing the second time?

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10). I have a bag of marbles that has 13 red and 6 blue marbles. What is the probability of drawing a red marble and then drawing another red marble if I put the first red marble back in the bag before drawing the second marble?

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11). I have a bag of marbles that has 13 red and 6 blue marbles. What is the probability of drawing a red marble and then drawing another red marble if I DO NOT put the first red marble back in the bag before drawing the second marble?

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